Pipe reaming and burring attachment for pipes



p 1952 T. A. CALIENDO 2,610,530

PIPE REAMING AND BURRING ATTACHMENT FOR PIPES Filed May 4, 1950 2 SPEETSSHEET 2 INVENTOR. 710/145 ,4 C/yL/f/v o BY 3 I I A stances where pipe delivered to a iofh fer use needs Patented Sept. 16,;1952

r i nventicmrlates tea eeannn gmr eu s implement and in. particular t'o: cnausedz in tlieends'ibfpipe'sj t it particular obiect of-the-invention is' toprof vine a t-col, eompl'ete in-itsel'ii which can he tachablymounted on the end of a pi'pe, held ina: vise; and ioperated' remove -the bunt-from the ope'n cut end-'of the pipe-eitherbefore oraiter' theia'rtter has been threau'ed. 1''

Tools of: this character havatda-large extent been contemplatedin 'connection with a ii-areas Figure-4 isa section taken'onthe line ledr of Figure-3 furthershowingthepipe supporting ring 7 structure,- 7 Figure-5 a side view'of firbOOlsIlGWil-igfi modie" fled-structure including a ratchet operation which? can used to regulate the tensionof the cutter spring and thecuttingoperation;

cuttin'g' stock I and "die implement and the'use therecif has' been curtailed in the absence of such implement 'uponwhich the it attachment can 'n prior-"patents burning andwith this immind my invention con templates a tool w'hi'c I can be: fitted to the end of. a pipe andbe ready for. the burringpperat-ion immediately; the which issinglein structure and has the parts so arranged that the tension of the curring cutter can be -c1o'se1y'- and continuously controlled; one inwhlch a'dfiustme'nt of the cut ter is a simple manual operation and one to which rotary manu'aipower may be applied to complete the reaming operation rapidly and accurately;v

A still further object" is' 'toprovi'de a reamer which: can accommodate pipes of different diameters; which can be adjusted'to -the end of the"- pipe withoutany special orknowledge and one which has a'minim'um number of parts which are readily dismantled for'replacement, sharpening 'or repair:

vention comprises certain construction herein-- after described and then particularly pointed out in the claims and a preferred embodiment of my invention is illustrated in the accompanying drawings in which:

Figure 1 is a side view of a tool constructed in accordance with my invention and. showingthe manner of mounting the same over the end of a pipe to be reamed,

Figure 2 is an enlarged'section taken through the cutter mounting means and the bridgeiportion of the tool to show how the tension on the cutter is controlled,

Figure 3 is a fragmentary portion of the lower end of the implement shown partly in section to illustrate the means of accommodating pipes of various sizes,

With these and otherobjectsinview,the in Figure 6 a section takeh-omthe line; of Figure 5- showing 7 the relative adjusted- =posi"-' ticns ef the-ratchet'arm and'associatedparts,

Figure 7 teen enlarged verticalsection taken; through the adiustabl'e parts of theholdershoiii ingthe' relativepositions thereof; and f Figu-re 8 is-' a-fragmentaryview' similar to Fig- 'ure 5-'-'sho'wing'* an adjusted position-crthecutter' tensioni'ng? means.

Referringto thedrawingsin detail; *l fl indicates a piece of threaded or unthreaded pipe; the open. end ef-which isto be reamed to' remove-theburri' left bythe threading dies or" the cuttingtoo'lganfd to which end is to befl-fixed my-novelreaming tool. The latter consists of awoke it including integral leg portions "I2 terminating at'the' innen end'o'f'the to'olin a pipe encircling" collar 'l 3iand' at the outer end: ina" bridge I54 extending fdia:

metricallya'cross the end of the pipebutspaced' therefrom sufficientlyz-to-"permita reaming cutter |=5' to be seatedin the-open end of the pipe If;

Thebridgefi4 -is'dril1ed to "provide a 'boretjtf and a-shculdered recess IT arranged concentrically with respect to thecut'ter .so that a a spindle l8 threaded at its upper andl'ower endsgas at 139" and 20 respectively can pass freely" through the unthreaded bore 16%; The lower end 20"--is tightly threaded into a tapped hole :21; in the upperiend of the" cutter 15 so -thatthe 'spinjdleandl cutter fer the-purpose of "the invention may the con s'idered-a unitary structure. The upper threaded end IQ of the spindle extends beyond the bridge [4, is adapted to receive the nut 22 and seats in a threaded socket 23 formed at the center of a turning arm 24 used in revolving the cutter to carry out the reaming operation.

In these tools, a factor in their operation has been the constant adjustment necessary to maintain adequate tension on the spring so that the cutter is urged into the end of the pipe with suflicient pressure to obtain an even reaming cutting action and in order to simplify the adjustment as much as possible so that the latter can be accomplished with a minimum of time and effort I have positioned spring 25 about the spindle I 8 so that one end seats in the recess l1 and the opposite end bears against the upper surface of the cutter. By turning the nut 22 down on the spindle the latter will be raised when the nut can be held in a, vise or has been partly as- 22 bears against the bridge and will increase the sembled ina pipe line. tension of the spring. The pipe I is then passed My invention is not to be restricted to the prethrough the collar l3 and is secured with its open cise details of construction shown since various end against the cutter 15 through the medium of 6 changes and modifications may be made therein a jamming screw 26 threaded through the collar without departing from the scope of the invention and carrying a hand grip 21. When the nut or sacrificing the advantages to be derived from 22 is backed off as shown in Figure 1 the spring it use.

will be under tension to-forcethegcutterjagainst' WhatI cla lS; v "j 'j the end df the pipe- -dur ing the rear'ni ng op'ra '--:-:1. A-pip'e-reaming tool comprising awoke intion which is carried on by rotating the arm 24. cluding legs, a bridge and a threaded collar at When a pipe of smaller size than the one showhi'igyiiopposite terminal ends of said legs, sleeve means in Figure 1 is to be reamed a filler ring, 30 may be for iixing the itooll i qua pipe and into which said positioned in the collar 13 'untirits'nang, o'llfa'r as adjustablythreaded to move the bridge abuts the outer face of said collar and its bore with respect to the end of a pipe held in said 32 registers with the jamming screwF ZBi Anyisleve meansg said' bridge bein drilled centrally number of these rings may be used to accomrngto proyide asrnooth bore substantially concentric date pipes of different sizes. W'ith"saidpipef'fspindle having a threaded end Referring to the form of the invention shown-1r)v freelyi i-p ing gh said bore, a reamer in Figure 5 the tool comprises a yoke 35 having 20 mounted on the lower end of said spindle a spring l r? l i ex ne lrelm rolle 36: ex ernal thweded e 2 1 --end i pmn z n esrally; wit e: portions 38 terminating at their outer end; na bridge wi tendmsAisleettical wcrossth an r iam dainclud nsa sleev i i v. ai e erndaz rewt onsecurm t, a ,rahlethsrewithfor n whs x h inut is threaded 1. 9 n a ngtqn oi a d- PiPd ene me tandsthe;

en l h am rde i d. u t r fi fi i ni t spr n pithisiee e i e e mans n if oilowging ;references farei 1n the t patentpi; 1

Jan is 1926 Ma t 251 9 

